The Japanese release of No More Heroes: Heroes Paradise on the Xbox 360 and PS3 has been delayed. It was originally slated for February 25; it is now going to be released sometime in April. The game has to be picked up by a publisher for a NA release because Ubisoft has passed on it.
So for now the only way to get your hands on this Hi-def remake is to import it. Here’s hoping that it will change very soon.